I have experienced the corporate world, then the startup world, and now the corporate world again. This raised a question for me: why do so many companies ignor

I have experienced the corporate world, then the startup world, and now the corporate world again. This raised a question for me: why do so many companies ignore continuous improvement? Based on my work with scaled lean agile practices, I developed this SaaS idea. I would love your feedback: where do you see flaws, risks or reasons why this might be a bad idea? Please do not hold back, I am looking for brutally honest input.